Astronomers found an extremely metal-poor star in the Large Magellanic Cloud. It shows how different star-forming environments can be.
This image shows the Large and Small Magellanic Clouds in the sky over the ESO's Paranal Observatory and the four telescopes of the VLT. Image Credit: By ESO/J. Colosimo - http://www.eso.org/public/images/potw1511a/, CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=38973313
Population III stars were the Universe’s first stars. They were extremely massive, luminous stars, and many exploded as supernovae. Image Credit: DALL-E “We want to understand what the properties of those first stars were and what were the elements they produced,” said Chiti. These metal-poor stars are difficult to find. Most of the stars in the Universe resulted from successive generations of stars; their enriched metallicity is a testament to that. Our Sun is a metal-richstars are out there. Since astronomers will likely never find an ancient Population 3 star, the Population 2 stars with the lowest metallicities are the next best things.
Finding such metal-poor stars in the LMC allowed astronomers to compare the star-forming conditions in that satellite galaxy to those in the Milky Way. The comparison can help astrophysicists understand how these star-forming conditions may have differed.
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